| Samarium [Sm] (CAS-ID: 7440-19-9) | |
| An: 62 N: 88 Am: 150.36 | |
| Group Name: Lanthanoid | |
| Block: f-block Period: 6 (lanthanoid) | |
| State: solid at 298 K | |
| Colour: silvery white Classification: Metallic | |
| Boiling Point: 2067K (1794'C) | |
| Melting Point: 1345K (1072'C) | |
| Density: 7.52g/cm3 | |
 Discovery Information |
| Who: Paul emile Lecoq de Boisbaudran |
| When: 1879 |
| Where: France |
| Name Origin |
| From the mineral samarskite, named after a Russian mine official, Colonel Samarski. |
| Sources |
| Never found free in nature. Samarium is found in many minerals, including bastnasite, monazite and samarskite. |
| Uses |
| Used in carbon-arc lighting, permanent magnets, lasers, alloys, headphones and as an absorber in nuclear reactors. Samarium oxide is used in optical glass to absorb infrared. |
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